Peugeot 407 2.2 (EW12) Petrol Engine Diesel Noise..VVT Gear Assembly Failure?

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AlvinCitroenC5
Posts: 110
Joined: 16 Apr 2017, 00:10
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Peugeot 407 2.2 (EW12) Petrol Engine Diesel Noise..VVT Gear Assembly Failure?

Unread post by AlvinCitroenC5 »

Hi,

It has been sometime that my 2007 407SW 2.2 Petrol has been making a diesel noise / rattle. This is especially apparent during cold start or high RPM. To my understanding, the sound is caused by a failing VVT Cam Gear. I am wondering, how bad should things get before I spend the money to replace it? Since it is a quite an expensive part. I also notice a flat spot during full throttle when my engine accelerates between 3700RPM to 4100RPM. And fuel mileage has not been great, I average 12.9L/100Km, which in my opinion is very high.

Your suggestions are greatly appreciated.

Thanks.
sro
New User
Posts: 1
Joined: 29 Dec 2021, 23:46

Re: Peugeot 407 2.2 (EW12) Petrol Engine Diesel Noise..VVT Gear Assembly Failure?

Unread post by sro »

It's an old thread but the problem for owners of the EW12J4 is the same.

In this Youtube video you should be able to find the reason and a solution:

In UK you can buy a spring at https://www.ashfield-springs.com/shop/c ... gs-11-20mm
It's S330 spring you need according to the video.

Inside EU you can buy a similar spring at:
https://www.fjedre.dk/c07200961000m

It's on your own risk to do the repair - Youtube have a lot of content, not all is correct.